10-Q Filing

CALIFORNIA WATER SERVICE GROUP CIK: 1035201 Q2 2025

Filing Information

Form Type	10-Q
Accession Number	`0001035201-25-000012`
Period End Date	20250630
Filing Date	20250731
Fiscal Year	2025
Fiscal Period	Q2
XBRL Instance	cwt-20250630_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 184 Income Statement 208 Cash Flow Statement 152 Comprehensive Income 72

Balance Sheet 184 line items

Line Item	Tag	Value	Unit	Period
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	136.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	136.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	136.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	136.00M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	59.58M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	59.58M	shares	Point-in-time
Utility plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.40B	USD	Point-in-time
Utility plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.40B	USD	Point-in-time
Utility plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.63B	USD	Point-in-time
Utility plant	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$5.63B	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	59.48M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	59.48M	shares	Point-in-time
Less accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.29B	USD	Point-in-time
Less accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.29B	USD	Point-in-time
Less accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.24B	USD	Point-in-time
Less accumulated depreciation and amortization	`PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation`	$1.24B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$4.16B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$4.16B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$4.33B	USD	Point-in-time
Net utility plant	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$4.33B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$50.54M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$50.54M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$50.12M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$50.12M	USD	Point-in-time
Restricted cash	`RestrictedCashCurrent`	$45.57M	USD	Point-in-time
Restricted cash	`RestrictedCashCurrent`	$45.57M	USD	Point-in-time
Restricted cash	`RestrictedCashCurrent`	$45.62M	USD	Point-in-time
Restricted cash	`RestrictedCashCurrent`	$45.62M	USD	Point-in-time
Customers, net	`AccountsReceivableNetCurrent`	$75.44M	USD	Point-in-time
Customers, net	`AccountsReceivableNetCurrent`	$75.44M	USD	Point-in-time
Customers, net	`AccountsReceivableNetCurrent`	$58.59M	USD	Point-in-time
Customers, net	`AccountsReceivableNetCurrent`	$58.59M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryAssetsCurrent`	$63.17M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryAssetsCurrent`	$63.17M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryAssetsCurrent`	$55.92M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryAssetsCurrent`	$55.92M	USD	Point-in-time
Other, net	`NontradeReceivablesCurrent`	$33.98M	USD	Point-in-time
Other, net	`NontradeReceivablesCurrent`	$33.98M	USD	Point-in-time
Other, net	`NontradeReceivablesCurrent`	$28.11M	USD	Point-in-time
Other, net	`NontradeReceivablesCurrent`	$28.11M	USD	Point-in-time
Accrued and unbilled revenue, net	`ReceivablesLongTermContractsOrPrograms`	$39.72M	USD	Point-in-time
Accrued and unbilled revenue, net	`ReceivablesLongTermContractsOrPrograms`	$39.72M	USD	Point-in-time
Accrued and unbilled revenue, net	`ReceivablesLongTermContractsOrPrograms`	$52.80M	USD	Point-in-time
Accrued and unbilled revenue, net	`ReceivablesLongTermContractsOrPrograms`	$52.80M	USD	Point-in-time
Materials and supplies	`PublicUtilitiesInventory`	$19.88M	USD	Point-in-time
Materials and supplies	`PublicUtilitiesInventory`	$19.88M	USD	Point-in-time
Materials and supplies	`PublicUtilitiesInventory`	$20.51M	USD	Point-in-time
Materials and supplies	`PublicUtilitiesInventory`	$20.51M	USD	Point-in-time
Taxes, prepaid expenses, and other assets	`TaxesPrepaidExpensesAndOtherAssetsCurrent`	$19.74M	USD	Point-in-time
Taxes, prepaid expenses, and other assets	`TaxesPrepaidExpensesAndOtherAssetsCurrent`	$19.74M	USD	Point-in-time
Taxes, prepaid expenses, and other assets	`TaxesPrepaidExpensesAndOtherAssetsCurrent`	$26.03M	USD	Point-in-time
Taxes, prepaid expenses, and other assets	`TaxesPrepaidExpensesAndOtherAssetsCurrent`	$26.03M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$324.14M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$324.14M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$361.58M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$361.58M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$359.92M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$359.92M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$357.41M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$357.41M	USD	Point-in-time
Goodwill	`Goodwill`	$37.06M	USD	Point-in-time
Goodwill	`Goodwill`	$37.06M	USD	Point-in-time
Goodwill	`Goodwill`	$37.06M	USD	Point-in-time
Goodwill	`Goodwill`	$37.06M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$302.97M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$302.97M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$306.75M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$306.75M	USD	Point-in-time
Total other assets	`TotalOtherAssets`	$697.44M	USD	Point-in-time
Total other assets	`TotalOtherAssets`	$697.44M	USD	Point-in-time
Total other assets	`TotalOtherAssets`	$703.74M	USD	Point-in-time
Total other assets	`TotalOtherAssets`	$703.74M	USD	Point-in-time
TOTAL ASSETS	`Assets`	$5.18B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$5.18B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$5.40B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$5.40B	USD	Point-in-time
Common stock, $0.01 par value; 136,000 shares authorized, 59,581 and 59,484 outstanding on June 30, 2025 and December 31, 2024, respectively	`CommonStockValue`	$595.00K	USD	Point-in-time
Common stock, $0.01 par value; 136,000 shares authorized, 59,581 and 59,484 outstanding on June 30, 2025 and December 31, 2024, respectively	`CommonStockValue`	$595.00K	USD	Point-in-time
Common stock, $0.01 par value; 136,000 shares authorized, 59,581 and 59,484 outstanding on June 30, 2025 and December 31, 2024, respectively	`CommonStockValue`	$596.00K	USD	Point-in-time
Common stock, $0.01 par value; 136,000 shares authorized, 59,581 and 59,484 outstanding on June 30, 2025 and December 31, 2024, respectively	`CommonStockValue`	$596.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$968.82M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$968.82M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$966.98M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$966.98M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$674.92M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$674.92M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$692.32M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$692.32M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-7.22M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-7.22M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-6.91M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-6.91M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$2.44M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$2.44M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$3.02M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$3.02M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.63B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.63B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.64B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.64B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.55B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.55B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.43B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.43B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.47B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.47B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.66B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.66B	USD	Point-in-time
Long-term debt, net	`LongTermDebtAndCapitalLeaseObligations`	$1.10B	USD	Point-in-time
Long-term debt, net	`LongTermDebtAndCapitalLeaseObligations`	$1.10B	USD	Point-in-time
Long-term debt, net	`LongTermDebtAndCapitalLeaseObligations`	$1.10B	USD	Point-in-time
Long-term debt, net	`LongTermDebtAndCapitalLeaseObligations`	$1.10B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.74B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.74B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.76B	USD	Point-in-time
Total capitalization	`CapitalizationLongtermDebtAndEquity`	$2.76B	USD	Point-in-time
Current maturities of long-term debt, net	`LongTermDebtCurrent`	$72.47M	USD	Point-in-time
Current maturities of long-term debt, net	`LongTermDebtCurrent`	$72.47M	USD	Point-in-time
Current maturities of long-term debt, net	`LongTermDebtCurrent`	$72.42M	USD	Point-in-time
Current maturities of long-term debt, net	`LongTermDebtCurrent`	$72.42M	USD	Point-in-time
Short-term borrowings	`ShortTermBorrowings`	$205.00M	USD	Point-in-time
Short-term borrowings	`ShortTermBorrowings`	$205.00M	USD	Point-in-time
Short-term borrowings	`ShortTermBorrowings`	$360.00M	USD	Point-in-time
Short-term borrowings	`ShortTermBorrowings`	$360.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$166.96M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$166.96M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$167.53M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$167.53M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryLiabilityCurrent`	$17.64M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryLiabilityCurrent`	$17.64M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryLiabilityCurrent`	$22.65M	USD	Point-in-time
Regulatory balancing accounts	`RegulatoryLiabilityCurrent`	$22.65M	USD	Point-in-time
Accrued other taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$3.06M	USD	Point-in-time
Accrued other taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$3.06M	USD	Point-in-time
Accrued other taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$6.08M	USD	Point-in-time
Accrued other taxes	`AccrualForTaxesOtherThanIncomeTaxesCurrent`	$6.08M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$8.98M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$8.98M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$8.41M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$8.41M	USD	Point-in-time
Other accrued liabilities	`AccruedLiabilitiesAndOtherLiabilities`	$56.27M	USD	Point-in-time
Other accrued liabilities	`AccruedLiabilitiesAndOtherLiabilities`	$56.27M	USD	Point-in-time
Other accrued liabilities	`AccruedLiabilitiesAndOtherLiabilities`	$56.97M	USD	Point-in-time
Other accrued liabilities	`AccruedLiabilitiesAndOtherLiabilities`	$56.97M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$538.36M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$538.36M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$686.08M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$686.08M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$411.08M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$411.08M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$422.78M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$422.78M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$814.55M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$814.55M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$845.66M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$845.66M	USD	Point-in-time
Pension	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$82.17M	USD	Point-in-time
Pension	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$82.17M	USD	Point-in-time
Pension	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$81.67M	USD	Point-in-time
Pension	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$81.67M	USD	Point-in-time
Advances for construction	`ContractWithCustomerRefundLiabilityNoncurrent`	$207.73M	USD	Point-in-time
Advances for construction	`ContractWithCustomerRefundLiabilityNoncurrent`	$207.73M	USD	Point-in-time
Advances for construction	`ContractWithCustomerRefundLiabilityNoncurrent`	$202.61M	USD	Point-in-time
Advances for construction	`ContractWithCustomerRefundLiabilityNoncurrent`	$202.61M	USD	Point-in-time
Contributions in aid of construction	`ContributionsInAidOfConstruction`	$294.87M	USD	Point-in-time
Contributions in aid of construction	`ContributionsInAidOfConstruction`	$294.87M	USD	Point-in-time
Contributions in aid of construction	`ContributionsInAidOfConstruction`	$294.97M	USD	Point-in-time
Contributions in aid of construction	`ContributionsInAidOfConstruction`	$294.97M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$94.18M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$94.18M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$99.33M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$99.33M	USD	Point-in-time
Commitments and contingencies (Note 9)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Note 9)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Note 9)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Note 9)	`CommitmentsAndContingencies`	-	USD	Point-in-time
TOTAL CAPITALIZATION AND LIABILITIES	`LiabilitiesAndStockholdersEquity`	$5.18B	USD	Point-in-time
TOTAL CAPITALIZATION AND LIABILITIES	`LiabilitiesAndStockholdersEquity`	$5.18B	USD	Point-in-time
TOTAL CAPITALIZATION AND LIABILITIES	`LiabilitiesAndStockholdersEquity`	$5.40B	USD	Point-in-time
TOTAL CAPITALIZATION AND LIABILITIES	`LiabilitiesAndStockholdersEquity`	$5.40B	USD	Point-in-time

Income Statement 208 line items

Line Item	Tag	Value	Unit	Period
Operating revenue	`RegulatedOperatingRevenueWater`	$468.93M	USD	2 Qtrs
Operating revenue	`RegulatedOperatingRevenueWater`	$468.93M	USD	2 Qtrs
Operating revenue	`RegulatedOperatingRevenueWater`	$515.05M	USD	2 Qtrs
Operating revenue	`RegulatedOperatingRevenueWater`	$515.05M	USD	2 Qtrs
Operating revenue	`RegulatedOperatingRevenueWater`	$264.95M	USD	1 Quarter
Operating revenue	`RegulatedOperatingRevenueWater`	$264.95M	USD	1 Quarter
Operating revenue	`RegulatedOperatingRevenueWater`	$244.30M	USD	1 Quarter
Operating revenue	`RegulatedOperatingRevenueWater`	$244.30M	USD	1 Quarter
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$85.50M	USD	1 Quarter
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$85.50M	USD	1 Quarter
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$77.64M	USD	1 Quarter
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$77.64M	USD	1 Quarter
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$148.49M	USD	2 Qtrs
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$148.49M	USD	2 Qtrs
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$141.83M	USD	2 Qtrs
Water production costs	`UtilitiesOperatingExpenseProductsAndServices`	$141.83M	USD	2 Qtrs
Administrative and general	`GeneralAndAdministrativeExpense`	$67.49M	USD	2 Qtrs
Administrative and general	`GeneralAndAdministrativeExpense`	$67.49M	USD	2 Qtrs
Administrative and general	`GeneralAndAdministrativeExpense`	$67.64M	USD	2 Qtrs
Administrative and general	`GeneralAndAdministrativeExpense`	$67.64M	USD	2 Qtrs
Administrative and general	`GeneralAndAdministrativeExpense`	$33.32M	USD	1 Quarter
Administrative and general	`GeneralAndAdministrativeExpense`	$33.32M	USD	1 Quarter
Administrative and general	`GeneralAndAdministrativeExpense`	$32.04M	USD	1 Quarter
Administrative and general	`GeneralAndAdministrativeExpense`	$32.04M	USD	1 Quarter
Other operations	`UtilitiesOperatingExpenseOther`	$25.63M	USD	1 Quarter
Other operations	`UtilitiesOperatingExpenseOther`	$25.63M	USD	1 Quarter
Other operations	`UtilitiesOperatingExpenseOther`	$52.55M	USD	2 Qtrs
Other operations	`UtilitiesOperatingExpenseOther`	$52.55M	USD	2 Qtrs
Other operations	`UtilitiesOperatingExpenseOther`	$31.70M	USD	1 Quarter
Other operations	`UtilitiesOperatingExpenseOther`	$31.70M	USD	1 Quarter
Other operations	`UtilitiesOperatingExpenseOther`	$60.53M	USD	2 Qtrs
Other operations	`UtilitiesOperatingExpenseOther`	$60.53M	USD	2 Qtrs
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$8.79M	USD	1 Quarter
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$8.79M	USD	1 Quarter
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$16.80M	USD	2 Qtrs
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$16.80M	USD	2 Qtrs
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$9.04M	USD	1 Quarter
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$9.04M	USD	1 Quarter
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$16.71M	USD	2 Qtrs
Maintenance	`UtilitiesOperatingExpenseMaintenance`	$16.71M	USD	2 Qtrs
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$71.98M	USD	2 Qtrs
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$71.98M	USD	2 Qtrs
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$65.82M	USD	2 Qtrs
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$65.82M	USD	2 Qtrs
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$36.03M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$36.03M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$32.98M	USD	1 Quarter
Depreciation and amortization	`UtilitiesOperatingExpenseDepreciationAndAmortization`	$32.98M	USD	1 Quarter
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$8.69M	USD	1 Quarter
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$8.69M	USD	1 Quarter
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$7.95M	USD	2 Qtrs
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$7.95M	USD	2 Qtrs
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$24.23M	USD	2 Qtrs
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$24.23M	USD	2 Qtrs
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$6.92M	USD	1 Quarter
Income taxes	`UtilitiesOperatingExpenseIncomeTaxExpenseBenefit`	$6.92M	USD	1 Quarter
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$10.64M	USD	1 Quarter
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$10.64M	USD	1 Quarter
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$10.36M	USD	1 Quarter
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$10.36M	USD	1 Quarter
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$20.12M	USD	2 Qtrs
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$20.12M	USD	2 Qtrs
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$21.61M	USD	2 Qtrs
Property and other taxes	`UtilitiesOperatingExpenseTaxes`	$21.61M	USD	2 Qtrs
Total operating expenses	`UtilitiesOperatingExpense`	$388.99M	USD	2 Qtrs
Total operating expenses	`UtilitiesOperatingExpense`	$388.99M	USD	2 Qtrs
Total operating expenses	`UtilitiesOperatingExpense`	$196.13M	USD	1 Quarter
Total operating expenses	`UtilitiesOperatingExpense`	$196.13M	USD	1 Quarter
Total operating expenses	`UtilitiesOperatingExpense`	$394.77M	USD	2 Qtrs
Total operating expenses	`UtilitiesOperatingExpense`	$394.77M	USD	2 Qtrs
Total operating expenses	`UtilitiesOperatingExpense`	$213.15M	USD	1 Quarter
Total operating expenses	`UtilitiesOperatingExpense`	$213.15M	USD	1 Quarter
Net operating income	`OperatingIncomeLoss`	$126.06M	USD	2 Qtrs
Net operating income	`OperatingIncomeLoss`	$126.06M	USD	2 Qtrs
Net operating income	`OperatingIncomeLoss`	$48.17M	USD	1 Quarter
Net operating income	`OperatingIncomeLoss`	$48.17M	USD	1 Quarter
Net operating income	`OperatingIncomeLoss`	$74.15M	USD	2 Qtrs
Net operating income	`OperatingIncomeLoss`	$74.15M	USD	2 Qtrs
Net operating income	`OperatingIncomeLoss`	$51.81M	USD	1 Quarter
Net operating income	`OperatingIncomeLoss`	$51.81M	USD	1 Quarter
Non-regulated revenue	`UnregulatedOperatingRevenue`	$5.51M	USD	1 Quarter
Non-regulated revenue	`UnregulatedOperatingRevenue`	$5.51M	USD	1 Quarter
Non-regulated revenue	`UnregulatedOperatingRevenue`	$10.61M	USD	2 Qtrs
Non-regulated revenue	`UnregulatedOperatingRevenue`	$10.61M	USD	2 Qtrs
Non-regulated revenue	`UnregulatedOperatingRevenue`	$9.99M	USD	2 Qtrs
Non-regulated revenue	`UnregulatedOperatingRevenue`	$9.99M	USD	2 Qtrs
Non-regulated revenue	`UnregulatedOperatingRevenue`	$4.91M	USD	1 Quarter
Non-regulated revenue	`UnregulatedOperatingRevenue`	$4.91M	USD	1 Quarter
Non-regulated expenses	`OtherNonoperatingExpense`	$2.87M	USD	1 Quarter
Non-regulated expenses	`OtherNonoperatingExpense`	$2.87M	USD	1 Quarter
Non-regulated expenses	`OtherNonoperatingExpense`	$6.08M	USD	2 Qtrs
Non-regulated expenses	`OtherNonoperatingExpense`	$6.08M	USD	2 Qtrs
Non-regulated expenses	`OtherNonoperatingExpense`	$4.12M	USD	1 Quarter
Non-regulated expenses	`OtherNonoperatingExpense`	$4.12M	USD	1 Quarter
Non-regulated expenses	`OtherNonoperatingExpense`	$6.33M	USD	2 Qtrs
Non-regulated expenses	`OtherNonoperatingExpense`	$6.33M	USD	2 Qtrs
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-4.34M	USD	1 Quarter
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-4.34M	USD	1 Quarter
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-4.59M	USD	1 Quarter
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-4.59M	USD	1 Quarter
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-7.61M	USD	2 Qtrs
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-7.61M	USD	2 Qtrs
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-9.39M	USD	2 Qtrs
Other components of net periodic benefit credit	`DefinedBenefitPlanOtherCosts`	$-9.39M	USD	2 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$3.56M	USD	2 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$3.56M	USD	2 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.82M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.82M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.90M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.90M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$3.69M	USD	2 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$3.69M	USD	2 Qtrs
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$3.46M	USD	2 Qtrs
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$3.46M	USD	2 Qtrs
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$2.63M	USD	2 Qtrs
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$2.63M	USD	2 Qtrs
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$1.31M	USD	1 Quarter
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$1.31M	USD	1 Quarter
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$1.75M	USD	1 Quarter
Income taxes on other income and expenses	`UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit`	$1.75M	USD	1 Quarter
Net other income	`OtherNonoperatingIncomeExpense`	$13.08M	USD	2 Qtrs
Net other income	`OtherNonoperatingIncomeExpense`	$13.08M	USD	2 Qtrs
Net other income	`OtherNonoperatingIncomeExpense`	$6.24M	USD	1 Quarter
Net other income	`OtherNonoperatingIncomeExpense`	$6.24M	USD	1 Quarter
Net other income	`OtherNonoperatingIncomeExpense`	$13.29M	USD	2 Qtrs
Net other income	`OtherNonoperatingIncomeExpense`	$13.29M	USD	2 Qtrs
Net other income	`OtherNonoperatingIncomeExpense`	$6.78M	USD	1 Quarter
Net other income	`OtherNonoperatingIncomeExpense`	$6.78M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$30.64M	USD	2 Qtrs
Interest expense	`InterestExpenseNonoperating`	$30.64M	USD	2 Qtrs
Interest expense	`InterestExpenseNonoperating`	$17.46M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$17.46M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$33.97M	USD	2 Qtrs
Interest expense	`InterestExpenseNonoperating`	$33.97M	USD	2 Qtrs
Interest expense	`InterestExpenseNonoperating`	$14.84M	USD	1 Quarter
Interest expense	`InterestExpenseNonoperating`	$14.84M	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$1.78M	USD	2 Qtrs
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$1.78M	USD	2 Qtrs
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$927.00K	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$927.00K	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$812.00K	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$812.00K	USD	1 Quarter
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$1.57M	USD	2 Qtrs
Allowance for borrowed funds used during construction	`InterestCostsCapitalizedAdjustment`	$1.57M	USD	2 Qtrs
Net interest expense	`InterestCostsIncurred`	$32.19M	USD	2 Qtrs
Net interest expense	`InterestCostsIncurred`	$32.19M	USD	2 Qtrs
Net interest expense	`InterestCostsIncurred`	$14.03M	USD	1 Quarter
Net interest expense	`InterestCostsIncurred`	$14.03M	USD	1 Quarter
Net interest expense	`InterestCostsIncurred`	$29.07M	USD	2 Qtrs
Net interest expense	`InterestCostsIncurred`	$29.07M	USD	2 Qtrs
Net interest expense	`InterestCostsIncurred`	$16.54M	USD	1 Quarter
Net interest expense	`InterestCostsIncurred`	$16.54M	USD	1 Quarter
Net income	`ProfitLoss`	$110.07M	USD	2 Qtrs
Net income	`ProfitLoss`	$110.07M	USD	2 Qtrs
Net income	`ProfitLoss`	$40.38M	USD	1 Quarter
Net income	`ProfitLoss`	$40.38M	USD	1 Quarter
Net income	`ProfitLoss`	$42.05M	USD	1 Quarter
Net income	`ProfitLoss`	$42.05M	USD	1 Quarter
Net income	`ProfitLoss`	$55.25M	USD	2 Qtrs
Net income	`ProfitLoss`	$55.25M	USD	2 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-118.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-118.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-401.00K	USD	2 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-401.00K	USD	2 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-247.00K	USD	2 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-247.00K	USD	2 Qtrs
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-174.00K	USD	1 Quarter
Net loss attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-174.00K	USD	1 Quarter
Net income attributable to California Water Service Group	`NetIncomeLoss`	$55.50M	USD	2 Qtrs
Net income attributable to California Water Service Group	`NetIncomeLoss`	$55.50M	USD	2 Qtrs
Net income attributable to California Water Service Group	`NetIncomeLoss`	$110.47M	USD	2 Qtrs
Net income attributable to California Water Service Group	`NetIncomeLoss`	$110.47M	USD	2 Qtrs
Net income attributable to California Water Service Group	`NetIncomeLoss`	$42.17M	USD	1 Quarter
Net income attributable to California Water Service Group	`NetIncomeLoss`	$42.17M	USD	1 Quarter
Net income attributable to California Water Service Group	`NetIncomeLoss`	$40.55M	USD	1 Quarter
Net income attributable to California Water Service Group	`NetIncomeLoss`	$40.55M	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.90	USD	2 Qtrs
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.90	USD	2 Qtrs
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.71	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.71	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.70	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.70	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.93	USD	2 Qtrs
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.93	USD	2 Qtrs
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.71	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.71	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.93	USD	2 Qtrs
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.93	USD	2 Qtrs
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.90	USD	2 Qtrs
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.90	USD	2 Qtrs
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.70	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.70	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	58.01M	shares	2 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	58.01M	shares	2 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	58.29M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	58.29M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	59.57M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	59.57M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	59.54M	shares	2 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	59.54M	shares	2 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	59.59M	shares	2 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	59.59M	shares	2 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	58.05M	shares	2 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	58.05M	shares	2 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	59.63M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	59.63M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	58.33M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	58.33M	shares	1 Quarter

Cash Flow Statement 152 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$110.07M	USD	2 Qtrs
Net income	`ProfitLoss`	$110.07M	USD	2 Qtrs
Net income	`ProfitLoss`	$40.38M	USD	1 Quarter
Net income	`ProfitLoss`	$40.38M	USD	1 Quarter
Net income	`ProfitLoss`	$42.05M	USD	1 Quarter
Net income	`ProfitLoss`	$42.05M	USD	1 Quarter
Net income	`ProfitLoss`	$55.25M	USD	2 Qtrs
Net income	`ProfitLoss`	$55.25M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$73.07M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$73.07M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$66.93M	USD	2 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$66.93M	USD	2 Qtrs
Change in value of life insurance contracts	`LifeInsuranceCorporateOrBankOwnedChangeInValue`	$1.81M	USD	2 Qtrs
Change in value of life insurance contracts	`LifeInsuranceCorporateOrBankOwnedChangeInValue`	$1.81M	USD	2 Qtrs
Change in value of life insurance contracts	`LifeInsuranceCorporateOrBankOwnedChangeInValue`	$1.26M	USD	2 Qtrs
Change in value of life insurance contracts	`LifeInsuranceCorporateOrBankOwnedChangeInValue`	$1.26M	USD	2 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$3.56M	USD	2 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$3.56M	USD	2 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.82M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.82M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.90M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$1.90M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$3.69M	USD	2 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$3.69M	USD	2 Qtrs
Receivables and accrued and unbilled revenue	`IncreaseDecreaseInReceivables`	$16.86M	USD	2 Qtrs
Receivables and accrued and unbilled revenue	`IncreaseDecreaseInReceivables`	$16.86M	USD	2 Qtrs
Receivables and accrued and unbilled revenue	`IncreaseDecreaseInReceivables`	$40.54M	USD	2 Qtrs
Receivables and accrued and unbilled revenue	`IncreaseDecreaseInReceivables`	$40.54M	USD	2 Qtrs
Water Arrearages Payment Program cash received	`IncreaseInAllowanceForCreditLossesWaterArrearagesPaymentProgram`	$-83.04M	USD	2 Qtrs
Water Arrearages Payment Program cash received	`IncreaseInAllowanceForCreditLossesWaterArrearagesPaymentProgram`	$-83.04M	USD	2 Qtrs
Water Arrearages Payment Program cash received	`IncreaseInAllowanceForCreditLossesWaterArrearagesPaymentProgram`	-	USD	2 Qtrs
Water Arrearages Payment Program cash received	`IncreaseInAllowanceForCreditLossesWaterArrearagesPaymentProgram`	-	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-10.54M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-10.54M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-9.03M	USD	2 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-9.03M	USD	2 Qtrs
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$5.53M	USD	2 Qtrs
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$5.53M	USD	2 Qtrs
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$6.68M	USD	2 Qtrs
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$6.68M	USD	2 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$7.31M	USD	2 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$7.31M	USD	2 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-3.66M	USD	2 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-3.66M	USD	2 Qtrs
Other changes in noncurrent assets and liabilities	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$106.95M	USD	2 Qtrs
Other changes in noncurrent assets and liabilities	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$106.95M	USD	2 Qtrs
Other changes in noncurrent assets and liabilities	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$-22.76M	USD	2 Qtrs
Other changes in noncurrent assets and liabilities	`IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet`	$-22.76M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$87.37M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$87.37M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$120.94M	USD	2 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$120.94M	USD	2 Qtrs
Utility plant expenditures	`PaymentsToAcquireWaterAndWasteWaterSystems`	$214.41M	USD	2 Qtrs
Utility plant expenditures	`PaymentsToAcquireWaterAndWasteWaterSystems`	$214.41M	USD	2 Qtrs
Utility plant expenditures	`PaymentsToAcquireWaterAndWasteWaterSystems`	$229.52M	USD	2 Qtrs
Utility plant expenditures	`PaymentsToAcquireWaterAndWasteWaterSystems`	$229.52M	USD	2 Qtrs
Life insurance proceeds	`ProceedsFromLifeInsurancePolicies`	$1.43M	USD	2 Qtrs
Life insurance proceeds	`ProceedsFromLifeInsurancePolicies`	$1.43M	USD	2 Qtrs
Life insurance proceeds	`ProceedsFromLifeInsurancePolicies`	-	USD	2 Qtrs
Life insurance proceeds	`ProceedsFromLifeInsurancePolicies`	-	USD	2 Qtrs
Purchase of life insurance contracts	`PaymentsToAcquireLifeInsurancePolicies`	-	USD	2 Qtrs
Purchase of life insurance contracts	`PaymentsToAcquireLifeInsurancePolicies`	-	USD	2 Qtrs
Purchase of life insurance contracts	`PaymentsToAcquireLifeInsurancePolicies`	$1.43M	USD	2 Qtrs
Purchase of life insurance contracts	`PaymentsToAcquireLifeInsurancePolicies`	$1.43M	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-48.00K	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-48.00K	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-207.00K	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-207.00K	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-229.31M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-229.31M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-214.37M	USD	2 Qtrs
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-214.37M	USD	2 Qtrs
Short-term borrowings	`ProceedsFromShortTermDebt`	$410.00M	USD	2 Qtrs
Short-term borrowings	`ProceedsFromShortTermDebt`	$410.00M	USD	2 Qtrs
Short-term borrowings	`ProceedsFromShortTermDebt`	$295.00M	USD	2 Qtrs
Short-term borrowings	`ProceedsFromShortTermDebt`	$295.00M	USD	2 Qtrs
Repayment of short-term borrowings	`RepaymentsOfShortTermDebt`	$255.00M	USD	2 Qtrs
Repayment of short-term borrowings	`RepaymentsOfShortTermDebt`	$255.00M	USD	2 Qtrs
Repayment of short-term borrowings	`RepaymentsOfShortTermDebt`	$230.00M	USD	2 Qtrs
Repayment of short-term borrowings	`RepaymentsOfShortTermDebt`	$230.00M	USD	2 Qtrs
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$416.00K	USD	2 Qtrs
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$416.00K	USD	2 Qtrs
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$430.00K	USD	2 Qtrs
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$430.00K	USD	2 Qtrs
Advances and contributions in aid of construction	`ProceedsFromContributionInAidOfConstructionFinancingActivities`	$10.94M	USD	2 Qtrs
Advances and contributions in aid of construction	`ProceedsFromContributionInAidOfConstructionFinancingActivities`	$10.94M	USD	2 Qtrs
Advances and contributions in aid of construction	`ProceedsFromContributionInAidOfConstructionFinancingActivities`	$20.54M	USD	2 Qtrs
Advances and contributions in aid of construction	`ProceedsFromContributionInAidOfConstructionFinancingActivities`	$20.54M	USD	2 Qtrs
Refunds of advances for construction	`RefundsOfAdvancesForConstruction`	$4.87M	USD	2 Qtrs
Refunds of advances for construction	`RefundsOfAdvancesForConstruction`	$4.87M	USD	2 Qtrs
Refunds of advances for construction	`RefundsOfAdvancesForConstruction`	$4.54M	USD	2 Qtrs
Refunds of advances for construction	`RefundsOfAdvancesForConstruction`	$4.54M	USD	2 Qtrs
Per- and polyfluoroalkyl substances (PFAS) settlement proceeds	`ProceedsFromInsuranceSettlementFinancingActivities`	-	USD	2 Qtrs
Per- and polyfluoroalkyl substances (PFAS) settlement proceeds	`ProceedsFromInsuranceSettlementFinancingActivities`	-	USD	2 Qtrs
Per- and polyfluoroalkyl substances (PFAS) settlement proceeds	`ProceedsFromInsuranceSettlementFinancingActivities`	$10.61M	USD	2 Qtrs
Per- and polyfluoroalkyl substances (PFAS) settlement proceeds	`ProceedsFromInsuranceSettlementFinancingActivities`	$10.61M	USD	2 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$1.24M	USD	2 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$1.24M	USD	2 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$1.21M	USD	2 Qtrs
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$1.21M	USD	2 Qtrs
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$53.38M	USD	2 Qtrs
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$53.38M	USD	2 Qtrs
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$1.34M	USD	2 Qtrs
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$1.34M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$38.10M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$38.10M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$32.34M	USD	2 Qtrs
Dividends paid	`PaymentsOfDividendsCommonStock`	$32.34M	USD	2 Qtrs
Distribution to noncontrolling interest	`PaymentsToMinorityShareholders`	$489.00K	USD	2 Qtrs
Distribution to noncontrolling interest	`PaymentsToMinorityShareholders`	$489.00K	USD	2 Qtrs
Distribution to noncontrolling interest	`PaymentsToMinorityShareholders`	$790.00K	USD	2 Qtrs
Distribution to noncontrolling interest	`PaymentsToMinorityShareholders`	$790.00K	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$1.16M	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$1.16M	USD	2 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$91.14M	USD	2 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$91.14M	USD	2 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$142.41M	USD	2 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$142.41M	USD	2 Qtrs
Change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-2.29M	USD	2 Qtrs
Change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-2.29M	USD	2 Qtrs
Change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$469.00K	USD	2 Qtrs
Change in cash, cash equivalents, and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$469.00K	USD	2 Qtrs
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$96.16M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$96.16M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$95.69M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$95.69M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$82.67M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$82.67M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$84.97M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$84.97M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$96.16M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$96.16M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$95.69M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$95.69M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$82.67M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$82.67M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$84.97M	USD	Point-in-time
Cash, cash equivalents, and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$84.97M	USD	Point-in-time
Cash paid for interest (net of amounts capitalized)	`InterestPaidNet`	$31.42M	USD	2 Qtrs
Cash paid for interest (net of amounts capitalized)	`InterestPaidNet`	$31.42M	USD	2 Qtrs
Cash paid for interest (net of amounts capitalized)	`InterestPaidNet`	$28.18M	USD	2 Qtrs
Cash paid for interest (net of amounts capitalized)	`InterestPaidNet`	$28.18M	USD	2 Qtrs
Accrued payables for investments in utility plant	`CapitalExpendituresIncurredButNotYetPaid`	$60.43M	USD	2 Qtrs
Accrued payables for investments in utility plant	`CapitalExpendituresIncurredButNotYetPaid`	$60.43M	USD	2 Qtrs
Accrued payables for investments in utility plant	`CapitalExpendituresIncurredButNotYetPaid`	$51.82M	USD	2 Qtrs
Accrued payables for investments in utility plant	`CapitalExpendituresIncurredButNotYetPaid`	$51.82M	USD	2 Qtrs
Utility plant contribution by developers	`NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1`	$14.16M	USD	2 Qtrs
Utility plant contribution by developers	`NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1`	$14.16M	USD	2 Qtrs
Utility plant contribution by developers	`NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1`	$14.16M	USD	2 Qtrs
Utility plant contribution by developers	`NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1`	$14.16M	USD	2 Qtrs

Comprehensive Income 72 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$110.07M	USD	2 Qtrs
Net income	`ProfitLoss`	$110.07M	USD	2 Qtrs
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	1 Quarter
Net income	`ProfitLoss`	$40.38M	USD	1 Quarter
Net income	`ProfitLoss`	$40.38M	USD	1 Quarter
Net income	`ProfitLoss`	$42.05M	USD	1 Quarter
Net income	`ProfitLoss`	$42.05M	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	2 Qtrs
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	2 Qtrs
Net income	`ProfitLoss`	$55.25M	USD	2 Qtrs
Net income	`ProfitLoss`	$55.25M	USD	2 Qtrs
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	2 Qtrs
Unrecoverable pension benefit plan costs, net of taxes	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	-	USD	2 Qtrs
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$120.00K	USD	2 Qtrs
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$120.00K	USD	2 Qtrs
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	-	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	-	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$60.00K	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$60.00K	USD	1 Quarter
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	-	USD	2 Qtrs
Amortization of defined benefit pension plans, net of taxes	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	-	USD	2 Qtrs
Unrecoverable pension benefit plan costs, net of tax of $0	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-13.66M	USD	2 Qtrs
Unrecoverable pension benefit plan costs, net of tax of $0	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-13.66M	USD	2 Qtrs
Unrecoverable pension benefit plan costs, net of tax of $0	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of tax of $0	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of tax of $0	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Unrecoverable pension benefit plan costs, net of tax of $0	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	2 Qtrs
Unrecoverable pension benefit plan costs, net of tax of $0	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Unrecoverable pension benefit plan costs, net of tax of $0	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	-	USD	1 Quarter
Amortization of defined benefit pension plans, net of tax of $60, $0, $120, and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$154.00K	USD	1 Quarter
Amortization of defined benefit pension plans, net of tax of $60, $0, $120, and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$154.00K	USD	1 Quarter
Amortization of defined benefit pension plans, net of tax of $60, $0, $120, and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$298.00K	USD	1 Quarter
Amortization of defined benefit pension plans, net of tax of $60, $0, $120, and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$298.00K	USD	1 Quarter
Amortization of defined benefit pension plans, net of tax of $60, $0, $120, and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$595.00K	USD	2 Qtrs
Amortization of defined benefit pension plans, net of tax of $60, $0, $120, and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$595.00K	USD	2 Qtrs
Amortization of defined benefit pension plans, net of tax of $60, $0, $120, and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$308.00K	USD	2 Qtrs
Amortization of defined benefit pension plans, net of tax of $60, $0, $120, and $0, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax`	$308.00K	USD	2 Qtrs
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-13.07M	USD	2 Qtrs
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-13.07M	USD	2 Qtrs
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$308.00K	USD	2 Qtrs
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$308.00K	USD	2 Qtrs
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$298.00K	USD	1 Quarter
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$298.00K	USD	1 Quarter
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$154.00K	USD	1 Quarter
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$154.00K	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$97.00M	USD	2 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$97.00M	USD	2 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$40.67M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$40.67M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$42.20M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$42.20M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$55.56M	USD	2 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$55.56M	USD	2 Qtrs
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-174.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-174.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-118.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-118.00K	USD	1 Quarter
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-247.00K	USD	2 Qtrs
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-247.00K	USD	2 Qtrs
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-401.00K	USD	2 Qtrs
Comprehensive loss attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-401.00K	USD	2 Qtrs
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$42.32M	USD	1 Quarter
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$42.32M	USD	1 Quarter
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$40.85M	USD	1 Quarter
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$40.85M	USD	1 Quarter
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$55.81M	USD	2 Qtrs
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$55.81M	USD	2 Qtrs
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$97.40M	USD	2 Qtrs
Comprehensive income attributable to California Water Service Group	`ComprehensiveIncomeNetOfTax`	$97.40M	USD	2 Qtrs

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.